Jaslyn has 3 times as many marbles as Lucy. Lucy has
58 as many marbles as Gem. If the three of them have a total of 56 marbles, how many marbles does Gem have?
Jaslyn |
Lucy |
Gem |
3x5 |
1x5 |
|
|
5x1 |
8x1 |
15 u |
5 u |
8 u |
The number of marbles that Lucy has is repeated. Make the number of marbles that Lucy has the same. LCM of 1 and 5 is 5.
Total number of marbles that the three of them have
= 15 u + 5 u + 8 u
= 28 u
28 u = 56
1 u = 56 ÷ 28 = 2
Number of marbles that Gem has
= 8 u
= 8 x 2
= 16
Answer(s): 16